What’s Vulnerable › Vulnerabilities
CVE-2021-31010: Apple iOS, macOS, watchOS Sandbox Bypass Vulnerability
- Severity: high (CVSS 7.5 v3.1)
- Exploited in the wild: yes — in CISA KEV since 2022-08-25
- EPSS: 3.7% probability of exploitation in the next 30 days
- Public exploit or detection template: none known
- Published: 2021-08-24 · updated 2026-06-17
- Weakness: CWE-502
Description
A deserialization issue was addressed through improved validation. This issue is fixed in Security Update 2021-005 Catalina, iOS 12.5.5, iOS 14.8 and iPadOS 14.8, macOS Big Sur 11.6, watchOS 7.6.2. A sandboxed process may be able to circumvent sandbox restrictions. Apple was aware of a report that this issue may have been actively exploited at the time of release..
Affected products
- Apple iPadOS: before 14.8 — fixed in 14.8
- Apple Iphone Os: from 12.0 before 12.5.5; from 14.0 before 14.8 — fixed in 12.5.5, 14.8
- macOS: from 10.15 before 10.15.7; 10.15.7, 10.15.7-security_update_2020, 10.15.7-security_update_2020-001, 10.15.7-security_update_2020-005, 10.15.7-security_update_2020-007, 10.15.7-security_update_2021-001 (+10) — fixed in 10.15.7
- Apple macOS: from 11.0 before 11.6 — fixed in 11.6
- Apple watchOS: before 7.6.2 — fixed in 7.6.2
How to fix
Upgrade to a fixed version: Apple iPadOS 14.8; Apple Iphone Os 12.5.5, 14.8; macOS 10.15.7; Apple macOS 11.6; Apple watchOS 7.6.2. Check the vendor advisory for mitigations.
References
- https://support.apple.com/en-us/HT212804
- https://support.apple.com/en-us/HT212805
- https://support.apple.com/en-us/HT212806
- https://support.apple.com/en-us/HT212807
- https://support.apple.com/en-us/HT212824
- https://support.apple.com/en-us/HT212804
- https://support.apple.com/en-us/HT212805
- https://support.apple.com/en-us/HT212806
- https://support.apple.com/en-us/HT212807
- https://support.apple.com/en-us/HT212824
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-31010
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